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Message-ID: <CAJuCfpF2Xe4XcvruJe7evZpbYY71W7SVjbXQ_+XgzJvcLtVuuw@mail.gmail.com>
Date: Tue, 15 Oct 2024 22:33:15 -0700
From: Suren Baghdasaryan <surenb@...gle.com>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	akpm@...ux-foundation.org, kent.overstreet@...ux.dev, corbet@....net, 
	arnd@...db.de, mcgrof@...nel.org, rppt@...nel.org, paulmck@...nel.org, 
	thuth@...hat.com, tglx@...utronix.de, bp@...en8.de, 
	xiongwei.song@...driver.com, ardb@...nel.org, david@...hat.com, 
	vbabka@...e.cz, mhocko@...e.com, hannes@...xchg.org, roman.gushchin@...ux.dev, 
	dave@...olabs.net, willy@...radead.org, pasha.tatashin@...een.com, 
	souravpanda@...gle.com, keescook@...omium.org, dennis@...nel.org, 
	jhubbard@...dia.com, yuzhao@...gle.com, vvvvvv@...gle.com, 
	rostedt@...dmis.org, iamjoonsoo.kim@....com, rientjes@...gle.com, 
	minchan@...gle.com, kaleshsingh@...gle.com, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, linux-mm@...ck.org, 
	linux-modules@...r.kernel.org, kernel-team@...roid.com
Subject: Re: [PATCH v3 1/5] maple_tree: add mas_for_each_rev() helper

On Tue, Oct 15, 2024 at 6:48 PM 'Liam R. Howlett' via kernel-team
<kernel-team@...roid.com> wrote:
>
> * Suren Baghdasaryan <surenb@...gle.com> [241014 16:36]:
> > Add mas_for_each_rev() function to iterate maple tree nodes in reverse
> > order.
> >
> > Suggested-by: Liam R. Howlett <Liam.Howlett@...cle.com>
> > Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
>
> I am now sure I added a R-B in a reply to this :)

Sorry, I missed it. Will add in the next version. Thanks!

>
> > ---
> >  include/linux/maple_tree.h | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> >
> > diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
> > index c2c11004085e..e7e2caa1a95a 100644
> > --- a/include/linux/maple_tree.h
> > +++ b/include/linux/maple_tree.h
> > @@ -592,6 +592,20 @@ static __always_inline void mas_reset(struct ma_state *mas)
> >  #define mas_for_each(__mas, __entry, __max) \
> >       while (((__entry) = mas_find((__mas), (__max))) != NULL)
> >
> > +/**
> > + * mas_for_each_rev() - Iterate over a range of the maple tree in reverse order.
> > + * @__mas: Maple Tree operation state (maple_state)
> > + * @__entry: Entry retrieved from the tree
> > + * @__min: minimum index to retrieve from the tree
> > + *
> > + * When returned, mas->index and mas->last will hold the entire range for the
> > + * entry.
> > + *
> > + * Note: may return the zero entry.
> > + */
> > +#define mas_for_each_rev(__mas, __entry, __min) \
> > +     while (((__entry) = mas_find_rev((__mas), (__min))) != NULL)
> > +
> >  #ifdef CONFIG_DEBUG_MAPLE_TREE
> >  enum mt_dump_format {
> >       mt_dump_dec,
> > --
> > 2.47.0.rc1.288.g06298d1525-goog
> >
>
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>

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